Should I worry about green tint and musty smell?« Back to Previous Page

After the rain last month, I noticed a greenish tint forming on the grout lines around the shower and bathtub in our master bathroom. The smell is really musty when we open the window, and my husband has been coughing more than usual lately. Do you think this is mold, and should I try to tackle it myself or get help?
Posted by Jennifer Walker
Asked on February 25, 2026 10:43 am
Absolutely, your observations point to the possibility of mold growth. The greenish tint and musty smell are common indicators for mold presence, especially after a period of high humidity or water exposure like you've experienced following the recent rain. In the UAE, particularly in Dubai, it's crucial to address such issues promptly due to our climate conditions which can promote mold proliferation.

Firstly, the appearance of greenish discoloration on grout lines is highly indicative of mold growth. The color can vary depending on the type of mold and moisture content but typically ranges from black, green, or brown. These colors correspond with different types of molds such as Aspergillus (often gray or white), Penicillium (typically blue-green), and Cladosporium (commonly olive-brown). Mold thrives in moist environments, hence the shower and bathtub areas are prime locations for its growth.

The musty smell is a tell-tale sign of mold as well. This odor can be present even before you see visible signs of mold. The smell indicates that molds have started to break down organic materials, releasing volatile compounds into the air. In Dubai's climate, with high humidity and frequent rainfall, such conditions are favorable for mold growth.

Regarding your husband’s respiratory issues, it is important to recognize that prolonged exposure to mold spores can indeed exacerbate or trigger asthma, allergies, and other respiratory problems. This is especially relevant in the UAE where indoor environments might not be as well-ventilated as they could be due to climate control systems dominating building design.

Given these circumstances, I strongly recommend you do not attempt to remediate this issue on your own unless you are fully trained in mold remediation processes and have appropriate personal protective equipment (PPE). In Dubai, regulations regarding the handling of mold and the use of chemicals for treatment can be stringent. Therefore, it's highly advisable to contact professional environmental inspection and remediation services.

You could reach out to Saniservice at 800-MOLDS or email hello@saniservice.com for a thorough inspection and remediation plan tailored to your specific situation. They will conduct an assessment, identify the extent of mold growth, and recommend appropriate methods including the use of biocides if necessary.

Remember, early detection and proper treatment are key in preventing further health risks associated with mold exposure. Ignoring this issue could lead to more severe problems down the line, both from a health perspective and from a property maintenance standpoint.
Posted by Sani Admin
Answered on February 27, 2026 8:27 am